Is Minfilia always useless ?

[Iscah]

Azem is not like other Ascians. It is not in their power to summon or travel the way we do. Each stone of the Convocation bestows upon its wielder the power of that particular office based upon the innate magic for whom the stone was made for. As Emet could see the hues of the soul with greater clarity (befitting his role as Hades), Azem could summon friends from afar and beyond (The literal Traveler and Shepard to the Stars). We see this when Emet's shade frees us from Eldibus's trap.

None of this matters for the circumstance of our being summoned to the First.

We did not have our convocation stone at the time, and even if we did, Azem's special trick is summoning other people to Azem's location, not sending Azem to other people.

And even if it was, we would need to know a century-old time-shifted version of our friend is in a parallel universe hoping we'll come over and help them.

It doesn't work that way.

We knew nothing about needing to travel to the First, even if we had the power to do so.

G'raha knew he needed us, and he used his power to contact and summon us.